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Understanding North American
Envelopes Sizes

 

 

Commercial Envelope Sizes

 

Window Envelope Sizes

Commercial Envelope

Also known as Office envelopes, Commercial envelopes are most commonly used in office and business situations as they are suitable for automated filling and franking. The commercial envelope is long and thin, generally with a ratio of shorter side to longer side.

Commercial
#5
#6
#6¼
#6½
#6¾
#7
#7½
#7¾
#8⅝
#9
#10
#10½
#11
#12
#14

Inches
3.0625 x 5½
3.375 x 6
3½ x 6
3½ x 6.25
3.625 x 6½
3.¾ x 6.¾
3.65 x 7.625
3.875 x 8.875
5.625 x 8.625
3.875 x 8.875
4.125 x 9.½
4 ½ x 9½
4½ x 10.375
4¾ x 11
5 x 11.½

Millimeters
78 x 140
86 x 152
89 x 152
90 x 165
92 x 165
95 x 171
95 x 194
95 x 194
98 x 190
92 x 219
98 x 225
105 x 241
114 x 241
114 x 264
127 x 292

 

Window Envelope

Window Envelopes are the most convenient way to mail invoices, bills, statements and business mailings. Envelopes with a window feature an opening on the front of the envelope which allows addresses or selected contents to show through for easy mailing. Available in a variety of sizes, colors and window styles.

Window
#6 ¼
#6 ¾
#7
#7 ¾
#8 ⅝
#9
#10
#11
#12
#14

Inches
3½ x 6
3.625 x 6½
3.¾ x 6.¾
3.875 x 8.875
5.625 x 8.625
3.875 x 8.875
4.125 x 9.½
4½ x 10.375
4¾ x 11
5 x 11.½

 

Millimeters
89 x 152
92 x 165
95 x 171
95 x 194
98 x 190
92 x 219
98 x 225
114 x 241
114 x 264
127 x 292

 

Announcement Envelope Sizes

 

Baronial Envelope Sizes

Announcement Envelope

Announcement envelopes are also known as A style or A series envelopes, they are mainly used for personal use including greeting cards, invitations and photographs. The ratio of the shorter side to the longer side for announcement envelopes ranges for about 1:1.3 to 1:1.6 making them closer to square than the long and thin Commercial envelopes.

Announcement
A2
A6
A7
A8
A10
Slim
6 ½ Square

Inches
4.375 x 5¾
4¾ x 6½
5¼ x 7¾
5½ x 8.125
6 x 9½
3.875 x 8.875
6½ x 6½

Millimeters
111 x 146
121 x 165
133 x 184
140 x 206
152 x 241
98 x 225
165 x 165

 

Baronial Envelope

Baronial envelopes feature a deep triangular flap, offset by a smooth curve at the tip of the flap. Baronial flaps give a luxurious feel and stand-out design to go with any invitation, announcement, or greeting card.

Baronial
#2
#4
#5
#5¼
#5½
#6
#7

Inches
31875 x 4¼
3.625 x 4.62
4.125 x 5.375
4¼ x 5¼
4.375 x 5¾
5 x 6¼
5¼ x 7½

Millimeters
81 x 108
92 x 117
105 x 130
108 x 133
111 x 143
127 x 159
133 x 191

 

Booklet or Open Side Envelope Sizes

 

Catalog or Open End Envelope Sizes

Booklet or Open End Envelope

A flap on the long side of Booklet envelopes makes it easy to enclose a brochure, catalog, a thick stack of paper or large business
communications inside. Booklet envelopes are available in a wide range of sizes, including 6 x 9, 9 x 12, and 10 x 13. The most popular sizes offer many colors to choose from to help coordinate envelopes with the visual branding of a business.

Booklet
#2½
#3
#4¼
#5
#6
#6½
#6¾
#7
#7¼
#7½
#8
#9
#9½
#10
#13

Inches
4½ x 5.875
4¾ x 6½
5 x 7½
5½ x 8.875
5¾ x 8.875
6 x 9
6½ x 9½
6¼ x 9.625
7 x 10
7½ x 10½
8 x 11.125
8.75 x 11½
9 x 12
9½ x 12.625
10 x 13 

Millimeters
114 x 149
121 x 165
127 x 190
140 x 216
146 x 225
152 x 229
165 x 241
159 x 244
178 x 254
190 x 267
203 x 283
222 x 292
229 x 305
241 x 321
254 x 330

 

Catalog or Open End Envelope

The main feature of Open End Envelopes, also known as catalog envelopes, is the placement of the envelope flap on the short end of the envelope. This design makes it easy and secure to insert and remove contents from the envelope.

Catalog
#1 
#1¾ 
#2 
#3  
#6
#7
#8  
#9¾
#10½
#12½
#13½
#14¼
#14½  
#15½  

Inches
6 x 9
6½ x 9½
6½ x 10
7 x 10
7.5 x 10½
8 x 11
8¼ x 11¼
8¾ x 11¼
9 x 12
9½ x 12½
10 x 13
11¼ x 14¼
11½ x 14½
12 x 15½

Millimeters
152 x 229
165 x 241
165 x 254
178 x 254
190 x 267
203 x 279
210 x 286
222 x 286
229 x 305
241 x 317
254 x 330
286 x 362
292 x 368
305 x 394